diff --git a/autoconf/ast_check_gnu_make.m4 b/autoconf/ast_check_gnu_make.m4
index 454f1997f4d085c48d9c6113f0afcedfa3a1c96e..5de603b28334bdfb5969de4986817dde80dc809b 100644
--- a/autoconf/ast_check_gnu_make.m4
+++ b/autoconf/ast_check_gnu_make.m4
@@ -1,20 +1,20 @@
-AC_DEFUN([AST_CHECK_GNU_MAKE], [AC_CACHE_CHECK(for GNU make, GNU_MAKE,
-   GNU_MAKE='Not Found' ;
-   GNU_MAKE_VERSION_MAJOR=0 ;
-   GNU_MAKE_VERSION_MINOR=0 ;
+AC_DEFUN([AST_CHECK_GNU_MAKE], [AC_CACHE_CHECK([for GNU make], [ac_cv_GNU_MAKE],
+   ac_cv_GNU_MAKE='Not Found' ;
+   ac_cv_GNU_MAKE_VERSION_MAJOR=0 ;
+   ac_cv_GNU_MAKE_VERSION_MINOR=0 ;
    for a in make gmake gnumake ; do
       if test -z "$a" ; then continue ; fi ;
       if ( sh -c "$a --version" 2> /dev/null | grep GNU  2>&1 > /dev/null ) ;  then
-         GNU_MAKE=$a ;
-         GNU_MAKE_VERSION_MAJOR=`$GNU_MAKE --version | grep "GNU Make" | cut -f3 -d' ' | cut -f1 -d'.'`
-         GNU_MAKE_VERSION_MINOR=`$GNU_MAKE --version | grep "GNU Make" | cut -f2 -d'.' | cut -c1-2`
+         ac_cv_GNU_MAKE=$a ;
+         ac_cv_GNU_MAKE_VERSION_MAJOR=`$ac_cv_GNU_MAKE --version | grep "GNU Make" | cut -f3 -d' ' | cut -f1 -d'.'`
+         ac_cv_GNU_MAKE_VERSION_MINOR=`$ac_cv_GNU_MAKE --version | grep "GNU Make" | cut -f2 -d'.' | cut -c1-2`
          break;
       fi
    done ;
 ) ;
-if test  "x$GNU_MAKE" = "xNot Found"  ; then
+if test  "x$ac_cv_GNU_MAKE" = "xNot Found"  ; then
    AC_MSG_ERROR( *** Please install GNU make.  It is required to build Asterisk!)
    exit 1
 fi
-AC_SUBST([GNU_MAKE])
+AC_SUBST([GNU_MAKE], [$ac_cv_GNU_MAKE])
 ])
diff --git a/autoconf/ast_prog_sed.m4 b/autoconf/ast_prog_sed.m4
index 371442a6cafba2199b6beaca8144f930a714da3f..fb986581e7c195537e426adb8e0d98daba631cba 100644
--- a/autoconf/ast_prog_sed.m4
+++ b/autoconf/ast_prog_sed.m4
@@ -12,8 +12,7 @@ AC_DEFUN([AST_PROG_SED],
      done
      echo "$ac_script" | sed 99q >conftest.sed
      $as_unset ac_script || ac_script=
-     ifdef([_AC_PATH_PROGS_FEATURE_CHECK],[],[define([_AC_PATH_PROGS_FEATURE_CHECK],defn([_AC_PATH_PROG_FEATURE_CHECK]))])
-     _AC_PATH_PROGS_FEATURE_CHECK(SED, [sed gsed],
+     ifdef([_AC_PATH_PROGS_FEATURE_CHECK], [_AC_PATH_PROGS_FEATURE_CHECK], [_AC_PATH_PROG_FEATURE_CHECK])(SED, [sed gsed],
 	[_AC_FEATURE_CHECK_LENGTH([ac_path_SED], [ac_cv_path_SED],
 		["$ac_path_SED" -f conftest.sed])])])
  SED="$ac_cv_path_SED"
diff --git a/configure b/configure
index 10d94fd7c6c0f3c8fb8f88121cc2168507d88e66..2d9228067f3f184bf4d455da10c327c5f81200fc 100755
--- a/configure
+++ b/configure
@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.ac Revision: 177162 .
+# From configure.ac Revision: 178605 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.61 for asterisk 1.6.
 #
@@ -6181,7 +6181,6 @@ else
      done
      echo "$ac_script" | sed 99q >conftest.sed
      $as_unset ac_script || ac_script=
-
      # Extract the first word of "sed gsed" to use in msg output
 if test -z "$SED"; then
 set dummy sed gsed; ac_prog_name=$2
@@ -6608,31 +6607,32 @@ fi
 
 { echo "$as_me:$LINENO: checking for GNU make" >&5
 echo $ECHO_N "checking for GNU make... $ECHO_C" >&6; }
-if test "${GNU_MAKE+set}" = set; then
+if test "${ac_cv_GNU_MAKE+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  GNU_MAKE='Not Found' ;
-   GNU_MAKE_VERSION_MAJOR=0 ;
-   GNU_MAKE_VERSION_MINOR=0 ;
+  ac_cv_GNU_MAKE='Not Found' ;
+   ac_cv_GNU_MAKE_VERSION_MAJOR=0 ;
+   ac_cv_GNU_MAKE_VERSION_MINOR=0 ;
    for a in make gmake gnumake ; do
       if test -z "$a" ; then continue ; fi ;
       if ( sh -c "$a --version" 2> /dev/null | grep GNU  2>&1 > /dev/null ) ;  then
-         GNU_MAKE=$a ;
-         GNU_MAKE_VERSION_MAJOR=`$GNU_MAKE --version | grep "GNU Make" | cut -f3 -d' ' | cut -f1 -d'.'`
-         GNU_MAKE_VERSION_MINOR=`$GNU_MAKE --version | grep "GNU Make" | cut -f2 -d'.' | cut -c1-2`
+         ac_cv_GNU_MAKE=$a ;
+         ac_cv_GNU_MAKE_VERSION_MAJOR=`$ac_cv_GNU_MAKE --version | grep "GNU Make" | cut -f3 -d' ' | cut -f1 -d'.'`
+         ac_cv_GNU_MAKE_VERSION_MINOR=`$ac_cv_GNU_MAKE --version | grep "GNU Make" | cut -f2 -d'.' | cut -c1-2`
          break;
       fi
    done ;
 
 fi
-{ echo "$as_me:$LINENO: result: $GNU_MAKE" >&5
-echo "${ECHO_T}$GNU_MAKE" >&6; } ;
-if test  "x$GNU_MAKE" = "xNot Found"  ; then
+{ echo "$as_me:$LINENO: result: $ac_cv_GNU_MAKE" >&5
+echo "${ECHO_T}$ac_cv_GNU_MAKE" >&6; } ;
+if test  "x$ac_cv_GNU_MAKE" = "xNot Found"  ; then
    { { echo "$as_me:$LINENO: error: *** Please install GNU make.  It is required to build Asterisk!" >&5
 echo "$as_me: error: *** Please install GNU make.  It is required to build Asterisk!" >&2;}
    { (exit 1); exit 1; }; }
    exit 1
 fi
+GNU_MAKE=$ac_cv_GNU_MAKE
 
 
 
diff --git a/configure.ac b/configure.ac
index ca87f669f0dab52bd910310055596be81a3d5120..62515088d2327575e91132280be31f1e3048aae0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -23,7 +23,6 @@ AC_CONFIG_HEADER(include/asterisk/autoconfig.h)
 AC_COPYRIGHT("Asterisk")
 AC_REVISION($Revision$)
 
-AC_GNU_SOURCE
 AC_USE_SYSTEM_EXTENSIONS	# note- does not work on FreeBSD
 
 case "${host_os}" in